Fred lewis wanke



(No Model.)

I'. L." WANKE. GRATE.'

P atented Junell, 1895.

NVE/VTOR @www ATTEST' ATTO RNEY FRED LE-VIS WANKE, OF CLEVELAND, OHIO, ASSIGNOR TO'TI-IE K. D. STEEL RANGE COMPANY, OF SAME PLACE.

GRATE.

SPECIFICATION forming part of Letters Patent No. 540,933, dated une 11, 1895.

Application led .Tune 24, 1892. Renewed March 2, 1895. Serial No 540.345. (No model.)

To all whom it may concern:

Be it known that I, FRED LEWIS WANKE, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Grates; and I do hereby declare that the following is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains to make'and use the same.

My invention relates to improvements in grates, and the object of the invention is to construct a grate that is equally well adapted to stoves, ranges, furnaces, fire-places, and wherever a grate can be advantageously used.

The invention therefore consists in the construction and combination of parts substantially as shown and described and particularly pointed out in the claims.

Referring to the accompanying drawings, Figure 1 is a plan view of agrate constructed according to my invention. cross-section and part end elevation and taken on linea', Fig. 1, the partsin this View being in raised land. operative position, substantially as they are shownin Fig. 1. Fig. 3 is a view corresponding to Fig. 2, excepting that the pivoted parts of the grate are down as they are when clinkers andthe like are to be removed from the same. Fig. 4t is a perspective detailed view of the pivoted or swinging frame which supports the'central cylinder. Fig. 5 is a crosssection of the central cylinder, taken, say, on line y y, Fig. 1. Y,

A represents a grate frame, which may be of any suitable size, according to the use that is to be made of it, and there may be a number of these sizes corresponding to different sizes or styles of stoves, furnaces, ranges, tire places, or the like where the grate may be used. Pivoted at their ends in this frame are the two grate bars, B, B, each of which has inward projecting fingers b, having a length equal `say to about one-fourth the width of the grate within the grate bars, said fingers formed of such size and in such numbers as will best suit the purpose.

It' a grate for fine coal be desired, the grate would be made with the vngers closer than they are here shown, and the said fingers are tapered more or less and fashioned in any suitable Way, the exact construction thereof Fig. 2 is a partv i not'being material so long as they serve the purpose of supporting the coal and leave a sufficient intervening space to shake down 55 ashes and the like, and to admit air. These fingers are formed along the inner edge of each of the grate bars B, Bf, and as here shown, there are projections or stems, b', b2, on each of the end fingers, which are adapted to rest 6o upon the pivoted frame C and hold the said grate bars up in Working position. This frame C is pivoted at one side on the bottom of frame A, and a swinging catch c at the opposite side holds said frame up in working position. (5 The said frame O has bearings c2 at its end for the spindles of the revolving cylinder D, confined within said frame. The said cylin- `der is made hollow, and is provided over its surface alternately with teeth or projections 7o d, and openings or holes d', the said openings or holes being sufficiently large to permit ashes to drop through, but notlarge enough to allow coal or fuel of any size to escape,'and the teeth d extend entirely around the said cylinder in any suitable arrangement thereon, spiral oriotherwise, and project laterally so as to reach to about the extremities of the side teeth b. The said vside teeth and the projections on the cylinder are so arranged as to 8o come opposite the space between each other, but in this instance are not shown as overlapping. They may however overlap more or less and still serve mypurpose, as the central teeth, if comparatively short, do not disturb the bed of coal and the cylinder is not so diffieult to rotate as it would be if the teeth were made relatively longer. The holes d formed in the cylinder or drum D serve as draft openings for the tire, as well as to pass 9o ashes through into the ash pit, and the cylinder thus constructed is self cleansing and does not accumulate ashes on its inside. Obviously anything that can drop through the holes dinto the cylinder can also drop through to the ash pit. The said cylinder can therefore be rotated more or less to agitate the bed of coal, shake down the ashes, or even to clean the grate to renew or build the re; but if the grate needs more than ordinary attention, the roo frame O and the cylinder it carries, and the side bars may all be lowered at once, as shown in Fig. 3. In this case the contents of the grate are bodily droppedinto the ash pit, and Y the grate bars swing into hanging position. On restoring the parts, the frame C and cylinder are raised and the projections or stems b of grate bar B being still supported thereon will be raised thereby, but the grate bar B needs to be swung forward by hand to bring it upon the frame C.

Obviously, the means here shown for supporting and operating the side bars B, B may be materially changed and yet remain Within the spirit of the invention, the invention be.

with the toothed pivoted side bars held iu Working position by said frame, substantially as set forth.

2. The pivoted frame and the toothed cylinder supported centrally thereon, in combination with independently pivoted side bars having teeth, and projections on said bars engaging said frame to support said side bars in working position, substantially as set forth.

3. In grates, a main frame, a pivoted frame supported on said main frame, and a toothed cylinder at the center of said grate, in combination with toothed side bars pivoted at their outer edge to swing down and open and projections to hold said side bars in working position, substantially as set forth.

Witness my hand to the foregoing specification this l3th day of June, 1892. v

FRED LEWIS WANKE. lVitnesses:

FRANK W. WAGNER, NELLIE L. MCLANE. 

